package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import java.time.LocalDateTime;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {
    @Autowired
    private EmployeeService employeeService;


    /**
     * 员工登录
     *
     * @param session
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(HttpSession session, @RequestBody Employee employee) {

        //1、将页面提交的密码password进行md5加密处理
        String password = employee.getPassword();   //获取明文密码123456
        password = DigestUtils.md5DigestAsHex(password.getBytes());  //密码加密

        //2、根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername, employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);

        //3、如果没有查询到则返回登录失败结果
        if (emp == null) {
            return R.error("登录失败");
        }

        //4、密码比对，如果不一致则返回登录失败结果
        if (!emp.getPassword().equals(password)) {
            return R.error("登录失败");
        }

        //5、查看员工状态，如果为已禁用状态，则返回员工已禁用结果
        if (emp.getStatus() == 0) {
            return R.error("账号已禁用");
        }

        //6、登录成功，将员工id存入Session并返回登录成功结果
        session.setAttribute("employee", emp.getId());
        return R.success(emp);
    }

    /**
     * 员工退出
     *
     * @param session
     * @return
     */
    @PostMapping("/logout")
    public R<String> logout(HttpSession session) {
        session.removeAttribute("employee");
        return R.success("退出成功");
    }

    /**
     * 新增员工
     *
     * @param employee
     * @return
     */

    @PostMapping
    public R<String> save(HttpServletRequest request, @RequestBody Employee employee) {
        log.info("新增员工，员工信息：{}", employee.toString());

        //设置初始密码123456，需要进行md5加密处理
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));

        //employee.setCreateTime(LocalDateTime.now());  //创建时间
        //employee.setUpdateTime(LocalDateTime.now());  //修改时间

        //获得当前登录用户的id
        //Long empId = (Long) request.getSession().getAttribute("employee");

        //employee.setCreateUser(empId);  //创建人
       // employee.setUpdateUser(empId);  //修改人

        employeeService.save(employee);
        return R.success("新增员工成功");
    }


    /**
     * 员工信息分页查询
     * @param page 当前查询页码
     * @param pageSize 每页展示记录数
     * @param name 员工姓名 - 可选参数
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page, int pageSize, String name) {
        log.info("page = {},pageSize = {},name = {}" ,page,pageSize,name);
         //构造分页构造器
        Page pageInfo = new Page(page, pageSize);

          //构造条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        //添加过滤条件
        queryWrapper.like(StringUtils.isNotEmpty(name), Employee::getName, name);
        //添加排序条件
        queryWrapper.orderByDesc(Employee::getUpdateTime);

        //执行查询
        employeeService.page(pageInfo, queryWrapper);
        return R.success(pageInfo);
    }

/**
 * 根据id修改员工信息
 * @param employee
 * @return
 */
@PutMapping()
public R<String> update(HttpServletRequest request,@RequestBody Employee employee){
    log.info(employee.toString());

    //获取登录用户id
    //Long employeeId = (Long) request.getSession().getAttribute("employee");

    //更新修改人
    //employee.setUpdateUser(employeeId);

    //更新修改时间
    //employee.setUpdateTime(LocalDateTime.now());
    employeeService.updateById(employee);
    return R.success("员工信息修改成功!");
}


    /**
     * 根据id查询员工信息
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id){
    log.info("根据id查询员工信息...");
    Employee employee = employeeService.getById(id);
    if(employee !=null){
        return R.success(employee);
    }
    return R.error("没有查询到对应员工信息");
}
}


